In May 2005 Luis Montes Mieza and Miguel Ángel López Varas were investigated by the Health Department of the Community of Madrid, by Manuel Lamela Fernández, because of two anonymous denunciations in which they were accused of sedations in high doses in terminally ill patients in the Emergency Service of the Severo Ochoa Hospital that he coordinated.

According to press reports, at that time the deaths in the emergency room of Severo Ochoa tripled percentage of the average of the other hospitals in Madrid.

The report presented by the Regional Ministry of Health identified 73 cases of sedation performed incorrectly between 1 September 2003 and 8 March 2005.

In January 2008, the court closed the case ratifying the dismissal that already in the month of June 2007 had determined and suppressed the legal basis that refers to the malpractice of the defendants.

[4] In April 2011, the sentence condemning Miguel Ángel Rodríguez, former spokesman of the government of José María Aznar, was convicted to pay 30,000 euros as the author of a "continuing offense of serious injury with advertising" against Luis Montes Mieza.